We're upgrading to a medium-sized server, a Dell PowerEdge 2950, dual-quad CPU's and 8 GB memory. This box can hold at most 8 disks (10K SCSI 2.5" 146 GB drives) and has Dell's Perc 6/i RAID controller. I'm thinking of this: 6 disks RAID 1+0 Postgres data 1 disk WAL 1 disk Linux I've often seen RAID 1 recommended for the WAL. Is that strictly for reliability, or is there a performance advantage to RAID 1 for the WAL? It seems to me separating the OS and WAL on two disks is better than making a single RAID 1 and sharing it, from a performance point of view. Thanks, Craig ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
